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Finding the Fourth Proportional to 111,464.80, 153,821.41 and 63,719.22

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Solution

The fourth proportional to 111,464.80, 153,821.41 and 63,719.22 is: 87,932.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,464.80 : 153,821.41 = 63,719.22 : x
  2. Step 2: Convert to fraction form
    111,464.80/153,821.41 = 63,719.22/x
  3. Step 3: Cross multiply
    111,464.80x = 153,821.41 × 63,719.22
  4. Step 4: Simplify right side
    111,464.80x = 9,801,380,264.50
  5. Step 5: Solve for x
    x = 9,801,380,264.50/111,464.80
  6. Step 6: Final answer
    x = 87,932.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.